staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()

The free_rtllib() function frees the "dev" pointer so there is use
after free on the next line. Re-arrange things to avoid that.

Fixes: 66898177e7e5 ("staging: rtl8192e: Fix unload/reload problem")
Cc: stable <[e-mail]>
Signed-off-by: Dan Carpenter <[e-mail]>
Link: https://lore.kernel.org/r/20211117072016.GA5237@kili
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/rtl8192e/rtl8192e/rtl_core.c

···
 			free_irq(dev->irq, dev);
 			priv->irq = 0;
 		}
-		free_rtllib(dev);
 
 		if (dev->mem_start != 0) {
 			iounmap((void __iomem *)dev->mem_start);
 			release_mem_region(pci_resource_start(pdev, 1),
 					pci_resource_len(pdev, 1));
 		}
+
+		free_rtllib(dev);
 	}
 
 	pci_disable_device(pdev);